PERAMBATAN RETAK (CRACK PROPAGATION) TAP BOLT UNC - OIL COATED ASTM 325 . Jurnal Teknik Mesin [Internet]. 2012 Oct. 31 [cited 2026 Oct. 30];2(1):20-5. Available from: https://jtm.itp.ac.id/index.php/jtm/article/view/669